Multiple-blade type-mold



J. S. BANCROFT AND A. L. KNIGHT.

MULTIPLE BLADE TYPE MOLD.

APPLICATION FILED JUNE 7 I918.

Patented Jan. 20, 1920.

INVENTORS. JJ'eZZerJBancm 4 3 SHEETS-SHEET l.

J. S. BANCROFT AND A. L. KNIGHT.

MULTIPLE BLADE TYPE MOLD.

APPLICATION FILED JUNE?- I9I8.

Patented Jan. 20, 1920.

3 SHEETSSHEET 2- a f [NVENTORS JJ/ZemBangmff, flmar LKnig/zt J. S.BANCROF T AND A. L. KNIGHT.

MULTIPLE/BLADE TYPE MOLD.

APPLICATION FILED JUNE7. 1915 1,328,256, 7 I Patented Jan. 20,1920.

3 SHEETSSHEET 3.

I I I. mum"!IWIIWHIINIIIWWIHH "WilliIHIIIIYIIWINW "UNITED snares PATENTorrron JOHN SELLERS BANCROFT AND AMOS L. KNIGHT, OF PHILADELPHIA,PENNSYLVANIA,

ASSIGNORS TO LAN STON MONOTYPE MACHINE COMPANY, OF PHILADELPHIA, PENN-SYLVANIA, A CORPORATION OF VIRGINIA. A

MULTIPLE-BLADE TYPE-MOLD.

Specification of Letters Patent.

Application filed June 7, 1918. Serial No. 238,731.

To all whom it may concern:

Be it known that we, JOHN SELLERS BAN- CROFT and AMos L. KNIGHT, bothcitizens of the United States, and residents of Philadelphia, county ofPhiladelphia, State of Pennsylvania, have invented certain new anduseful Improvements in Multiple-Blade Type- Molds; and we do herebydeclare the following to be a clear and exact description of the same,reference being had to the accompanying drawings and to the charactersof reference marked thereon.

The present invention relates to improvements in type molds, such asthose adapted to be used in connection with typesetting machines and hasforv its general objects to produce a mold capable of castinga varietyof type sizes, such a mold being conveniently provided with dimensioningand ejecting mechanism in the form of a plu rality of blades, certain ofwhich can be connected for operation while the remaining are locked inclosed, inoperative position, the blades preferably being arranged sideby side; to produce a mold for casting type composed of portions atright angles to each other, such as type having a vertical body portionand a horizontal face bearing overhang or platform portion, a mold ofthis kind being povided with dimensioning and ejecting mechanism havingaction or effect upon both the body and the overhang portion of thetype. More specifically the invention has for its purpose to produce anoverhang or platform type mold having a main mold blade of type shoulderheight and a plu rality of supplemental blades slidable on a reducedportion of one of the type blocks of the mold, the supplemental bladesaiding in the formation and ejection of the platform part of the typewhile the main blade is concerned with the formation and ejection of thebody of the type. Proper adjustment of the supplemental blades make itpossible to produce types of a variety of point sizes, the body portionof the type, however, being unvarying in point size. Further objects andpurposes of the present invention will be hereinafter pointed out orwill otherwise appear in connection with the following description ofthe embodiment of the inventionshown in the accompanying drawings inwhich line 2-2 of Fig. 1.

Fig. 3 is a perspective view of the mold blades and their adjustingdevices, certain of the stationary parts of the mold being shown brokenaway and insection,

Fig. 4 is a vertical section of the mold substantially on line 4:4t ofFig. 1,

Fig. 5 is a detail lan view showing the mold blades and thelr adjustingdevices, a part of the mold blade shoesbeing broken away.

Fig. 6 is a perspective view showing some of the stationary parts of themold in separated relation,

Fig. 7 is a vertical cross section substantially on line 77 of Fig. 1,and.

Figs. 8 and 9 are perspective views of two sizes of types produceablefrom the mold.

The mold chosen to illust-ate an embodiment of the invention is of atype well known as manufactured by Lanston Monotype Machine Company andcomprises generally a base block having a nozzle opening for theadmission of molten type metal to the mold cavity, a water base andsquaring block, stationary type or side blocks forming twoside walls ofthe said cavity, a mold blade movable between said type blocks andforming with its forward end another side wall of said cavity, a crossblock movable in a path at right angles to the path of movement of saidblade and forming the fourth side wall of the cavity, gate blocks and ajet pusher.

A mold of this type is conveniently operated when employed as part of atype casting machine of the kind, for example, disclosed in the UnitedStates patent issued to J. Sellers Bancroft, No. 625,998, dated 30th,1899. This machine operates the mold blade and the cross block in timedPatented Jan. 20, 1920.. I

sition and the way is free for the type to be pushed into the typecarrier or other device forming a part of the mechanism for dischargingthe type upon the galley of the machine.

The drawings show a mold of the general kind discussed above andembodying the present invention but they include no part of the castingmachine and connections thereof, which, it is to be understood, arerequired for the successful commercial operation of the mold. The baseplate or block 8 is a flat plate adapted to be secured to a suitablecasting machine and is provided with a nozzle opening 9 for cooperationwith the casting mechanism of said machine. Secured to the top of thebase plate along the front A edge thereof is the abutment 10 carryingthe shoe 11 adjustable by means of the set screws 12. This constructionas well as that of the cross block 13 and gate blocks 14:, 14:, slidableon the base plate and between the shoe 11 and the type blocks to behereinafter described, and of the gate pusher 15 (Fig. 2) and its cam 16is similar to that of well known molds and need not be further describedhere: it will be understood also that the whole mold structure shown hasmany of the features and characteristics of the structures set forth inprior patents such, as for example, that to Amos L. Knight No.1,219,956, dated March 20th, 1917, and which will be at once recognizedby those skilled in the art.

Also mounted directly on the base plate 8 is the water base and squaringblock 17, the general shape of which is best shown in Fig. 6. The upwardextensions 17 17 of the squaring block 17 form a channel between them inwhich the small type or side block 18 is located but which it does notcom pletely fill; it leaves a space between it and the extension 17 forthe main mold blade as will be described hereinafter.

The small type or side block 18 has a portion 18 adjacent the moldcavity, the height of which is reduced so as to be substantially lowquad high and a lower supplemental blade supporting portion 18"; theblock is secured to the squaring block 17 and to the base block 8 byscrews 19, (Fig. 4.) through the bottom of the base block; it is alsosecured to the extension 17 of the squaring block by screws 19 (Fig. 4)through screw holes 19 (Fig. in the squaring and small type blocks. Whenthe screws 19' are drawn tight the type block 18 will be spaced from theextension 17 suflicient to allow of a sliding fit between the block 18and the extension 17, of the type shoulder high main mold blade 20 thebottom of which slides upon the squaring block 17. The mold blade stop21 is secured by screws to the side of the extension 17 and has areduced. end projecting into an elongated aperture in the mold blade;the end walls of the aperture are adapted" to come into contact withsaid reduced end of the stop at the extremes of the forward and rearwardmovements of the mold blade so that the stop 21 serves to limit suchmovements.

The large type or side block 22 is secured to the squaring block 17 andthe base block 8 by screws 28 through the bottom of the base block, andto the extension 17 of the squaring block by screws through the screwholes 24; (Fig. 6) in the squaring block and the said type block. Onevertical face of the large type block forms a-fcontinuation of the endwall of the extension 17 which contacts with the mold blade 20 and soitself contacts with and guides said blade. Another vertical face ofsaid type block 22, which face is at right angles to the face previouslymentioned, is in line with a corresponding face of the small type block18 and with said last mentioned face forms a guiding slide for the crossblock 13. It will now be seen that the mold cavity side walls are formedby the two type blocks, the cross block and the forward end of the moldblade: the jet cavity is located between the mold cavity and the nozzleopening 9 and is formed by walls of the squaring block 17, the two gateblocks 14:, 14 and the end of the gate pusher 15.

The large type block 22 is provided with a type shoulder high portionadjacent the cross block, a stepped portion, 22 slightly lower than theheight of extension 17 (see Fig. 7) and an intermediate portion 22 thelatter serving to support the shoe 25, cured to the step 22 by screws 26through the holes 26 (Fig. 6).

Held against lateral movement between the shoe 25, the type blockportion 22 and the extension 17 of the squaring block 17 but slidable ina direction at right angles to the blade 20 is the controllingslide ormember 27 for the main mold blade 20 and the series of supplementalblades 20, 20",

20, 2O, 20 and 20 The main blade 20, as

the cut down portion referred to and is provided with an elongatedaperture, said last mentioned portion engaging with the top surface ofthe cut down portion of the lower section, leaving a vertical wall toengage with. said gaging surface 28.. 'When the lower blade is movedinwardly, the gaging surface 28 will come against the downs Wardlyextending portion of the upper blade 20 to carry said upper blade withthe lower blade to correspondingly vary the size of the upper portion ofthe mold.

The supplemental blades 20 20, 20, 20, 20 and 2O are generally speakingsimilar in construction to the upper blade 20 described and are arrangedside by side in slidingcontact with each other and between the side ofthe upper blade 20 and a lateral guiding portion 28, of the block 18,the said portion bringingthe block up to type shoulder height. Theforward portions of the supplemental blades are slidableon the top ofthe reduced portion 18 of the small type block 18 and their apertured,downwardly extending portions are slidable on the top of the lowerportion 18 of said b1ock18. The blade 20 is slidable against the side ofthe main mold blade upper section 20. The blade 20 has a one way or lostmotion connection with the blade 20 in the form of a lug 29 at its rearend which extends laterally to contact with the rear end of thelaterally extending lug 29 on supplemental blade 20*, the latter bladebeing shorter in length than the blade 20, by an amount equal to thewidth of the lug 29 in like manner the blades 20, 20, 20 and 20 havelateral lugs 29', 29, 29 and 29 respectively each blade being shorterthan the immediately preceding blade by the width of the overlapping lugof the said preceding blade. The blade 20 being the last of the series,is not equipped with a lateral lug: This blade is shorter than blade 20by the width of the lug 29 and the length of this lug isnot greater thanthe thickness of the blade 20. It will be seen from the aboveconstruction that when the forward ends of all the blades are inalinement their rear lugs will be nested in contact with each other, thelug 29 being in contact with the rear end of blade 20 furthermore, thata forward movement of the main blade, the upper section being moved bycontact with the gag ing surface 28 of the lower section, will ac-rcomplish a forward movement in unison therewith of the supplementalblade 20" when the lug 29 of the upper section 20 of said main-blade hasbecome nested with theelongated apertures provided in the downwardlyextending portionsof the upper and supplemental blades, and theother endbeing connected by a spring 32to the post 33 fixed to thenmember 27.This member is provided also with. alocking extension 34 including. anangular projection 34 (Fig. 5) on its end, said locking extension alsoprojecting intoisaid elongated apertures of the, upper and supplementalblades. The locking member 34 projects slightly farther into saidapertures than the lever 30 so that when the latter contacts withthemear walls of the apertures of any one, or more of the blades, theprojection 34 of the locking member 34 at the same time contacts withthe forward walls of the apertures of one or more of the succeedingblades in the series, particularly of that blade which is next in theseries to the last engaged bythe lever 30, to the end that thelatterblades are locked in closed, inoperative position. It is to benoted that the construction is such that the projection 34 cannot beentered into the blade apertures except at'the time that. the saidblades are in closed position; the blades not held by the projection 34either directly or through the nesting lugs but controlled by the lever30 areopened or driven rearwardly by the force of the spring 32 actingthrough said lever, which spring at all times tends to maintain in .openposition the blades controlled bythe'lever. Because the lever and thelocking extension are secured to the same sliding element, the member27, the lever and the extension are moved in unison when theislide isadjusted; hence, the relation is always preserved of locking againstmovement bladesfarther along in the series, than those the movement ofwhich is controlled by the lever 30.-

In the device shown there are seven blades, counting the main blade-as asingle blade, as it of course may be without affecting the inventionherein, and the mold is capable of producing type or. seven differentpoint sizes. In order to insure proper adjustment of the slide member27, the latter is provided with seven notches 35 each corresponding witha blade: these notches as shown are numbered 12, 18, 24, 30, 36, 42 and48-because whenthe slide is positioned with the notch 12 held by thedetent 36 to bepresently described, the lever 30 and the locking bar 34are positioned so that all of the blades are held locked in closedposition except the main blade which, being 12 points in thickness,makes the mold suitable for producing 12 point type; when the notch 18is engaged by the detent the lever 30 engages with both the mainbladeand the supplemental blade 20" so that the two 'operatein unison, aforward movement of the main blade, dueto suitable connections with themold operating mechanism (not shown) projecting into the aperture 37(Fig. 2) of the lower section of said main blade, causin a similarmovement of the supplemental lade' 20 against the yielding opposition ofthe lever 30 and spring32 by engagement of the lug 29 of theuppersection of the main blade with the 1ug29 of the said supplementalblade,this movement being permitted by the yielding of the spring 32;and the rearward movement of the supplemental blade following that ofthe main blade but due to the spring 32 and lever 30. The supplementalblade 20 is six points in thickness so that when this blade isoperatively combined with the main 12 point blade themold is for 18point type. The next supplemental blade 20 when coma bined with the mainblade and the supplemental blade 2O by engaging the detent 36 with thenotch 2 L produces a 24, point mold since the blade 20 is 6 pointsthick. It is to be noted that this'is the position of the parts as'shownin the drawings. Similarly since the remaining supplemental blades areeach 6 point blades, the mold is capable of pro ducing also 30, 36, 42and 48 point type, as the notches 35 indicate.

The spring detent '36 is pivoted. to the large type block 22 at 38 andhas a tooth suitably designed to enter one of the notches 35 and. holdthe slide 27in adjusted position. A spring 39 serves, as isobvious,yieldably to maintain the tooth in the notch selected. A handle 40 isprovided for moving the detent out of engagement with the notched slideso that the latter may be manually po' sitioned. The detent is alsoprovided with a stop projection 41 (Fig. 3) for engaging with the underside'of the slide to prevent undue movement of the detent, such, forexample, as might bring it into the path of the movement of the crossblock 13.

It will be observed that the type formed when only the main blade isoperated may be ordinary type while all of the larger sizes are providedwith a 12 point body 45 and 46 (Figsj8 and 9) and an overhanging facecarrying platform such as that indicated in Figs. 8 and '9 by thecharacters 47 and 47 respectively, the extent of overhang depend-' ing'upon the number of supplemental blades operated in conjunction with themain blade.

Since the bottom of the overhangingplatform bearing the type face iscast on the top of the portion 18' of the small type block, whichportion is low quad high, the thick ness of the platform proper is equalto'the difl'erencebetween the type shoulder high and'the low quad highmeasurements. Low quads will, therefore, suitably support the platformwhen the type isplaced in a form for printing, stereotyping and thelike. I

When the blades are assembled the mold blade shoe'42 secured to thelarge type block 22 by screws 42 and the mold'blade shoe 43 secured tothe s uarin block'lZ by screws has W s 6}. me a tioned to guide andprotect said. blades. hen the slidemember 27 is adjusted so thatthe'lever 30 engages with the last of the series of supplemental blades, thelockin'g projectionfi is of course. unnecessary and a recess 44, shownin dotted lines in Figs. 1 and 5, is provided'in the shoe/13m receive itunder such conditions. A portion of the projection 34" may extend intosaid recess also when other portions thereof are locking one or moreblades near the end of the'series, this being the case because theprojection 34 may for strengthening purposes be wider, than the pointsize of the supplemental blades. 'It will be understood that variousmodifications may be madein the mold structure,

including the blades and their arrangement and the'means for controllingand locking them without departingfromj the spirit and scope of theinvention asset forth by the claims.

1. A type mold comprising two type blocks each forming aside wall of.the mold cavity, one of said type blocks having a portion adjacent themold cavity reduced in height, whereby a mold cavity shaped to produceoverhang type is formed, a mold blade slidable between said blocks and asupplemental mold blade adapted to be moved in unison with the said moldblade to exert an ejecting action on the overhang portion ofthe typec'ast,said' supplemental blade being slidable'upon said reduced portionof said block. i

2. A type mold comprising two type blocks each forming a side wall ofthe mold cavity, one of. said type blocks being type shoulder high adjacent the mold cavity and the second less than type'slioulder highadjacent the mold cavity, a type shoulder high mold blade slidablyfitted between said blocks and a supplemental mold blade slida'ble onthat portion of the second type block which is less than type shoulderhigh.

3. A type mold comprising blocks forming walls of the mold cavity, oneof said blocks having a portionadjacent the mold' cavity reduced inheight whereby a mold cavity shaped to produce overhang type is formed,a mold blade slidable betweentwo of said blocks, the'end wallof saidblade forming a wall of the mold cavity and a supplemental mold bladeslidable against the side of said mold blade near. the top thereof andslidable also upon the said reduced portion of one of said blocks.

at. A mold for overhang type comprising blocks forming walls of the moldcavity, one of said blocks having a reducedfportion ad jacent the moldcavity whereby amold Gavity shaped to produce overhang type is formed, amold blade slidable between two of said. blocks, the wallof saidbladeiae forming a wall of the mold cavity, and a supplemental moldblade slidable against the side of said mold blade near the top thereofand also upon the said reduced portion of one of said blocks and a lostmotion connection between said mold blade and said supplemental blade toeffectforward movement in unison when, during the forward movement ofthe mold blade, its forward end has become alined with the forward endof the supplemental blade.

5. A mold for overhang type comprising blocks forming walls of the moldcavity, one of said blocks having a reducedportion adjacent the moldcavity whereby a mold cavity shaped to produce overhang type is formed,a mold blade slidable between two of said blocks, the end wall of saidblade forming a wall of the mold cavity, and a supplemental mold bladeslidable against the side of said mold blade near the top thereof andalso upon the reduced portion of,

said block, a lug being provided on one of the blades for operativelyconnecting the two blades to cause them to move forwardly in unison whenduring the forward movement of the mold blade, its forward end hasbecome alined with the forward end of the supplemental blade.

' 6.. A mold for overhang type comprlsing blocks forming walls of themold cavity, one of said blocks having a reduced portion adjacent themoldcavity whereby a mold cavity shaped to produce overhang. type 1Sformed, a mold blade slidable between two of said blocks, the end wallof said blade forming a wall of the mold cavity, a supplemental moldblade slidable against the side of thesaid mold blade near the topthereof and also upon the reduced portion of said block, a lug beingprovided on one of the blades for operatively connecting the two bladesto cause the supplemental blade to'move toward closed position in unisonwith the mold blade and yieldable means tending to maintain saidsupplemental blade in open position.

7. A mold for overhang type comprising blocks forming walls of the moldcavity, one of said blocks having a reduced portion adjacent the moldcavity whereby a mold cavity shaped to produce overhang type is formed,a mold blade slidable between two of said blocks, the end wall of saidblade forming a wall of the mold cavity, a supplemental mold bladeslidable against the side of the said mold blade near the top thereofand also upon the reduced portion of said block, a lug being provided onone of the blades for operatively connecting the two blades to causethem to move forwardly in unison when, during the forward movement ofthe mold blade, its forward end has become alined with the forward endof the supplemental blade, and means for yield ably opposing the saidforward movement of the supplemental blade and for causing the rearwardmovement of said supplemental blade.

8. A mold for overhang type comprising blocks forming walls of the moldcavity, one of said blocks having a reduced portion adjacent the moldcavity whereby a mold cavity shaped to produce overhang type is formed,a mold blade slidable between two of said blocks, the end wall of saidblade forming a-wall of the mold cavity, a supplemental mold bladeslidable against the side of the said mold blade near the top thereofand also upon the reduced portion of said block having said reducedportion and adjustable means for permitting said supplemental blade tobe operated or, as desired, looking it in closed inoperative position.

9. A mold foroverhang type comprising blocks forming walls of the moldcavity, one of said blocks having a reduced portion adjacent the moldcavity whereby a mold cavity shaped to produce overhang type is formed,a mold blade slidable between two of said blocks, the end wall of saidblade forminga wall of the mold cavity, a supplemental mold bladeslidable against the side of the said mold blade near the top thereofand also upon the reduced portion of said block, a lost motionconnection between said mold blade and said supplemental blade to causethem to move forward in unison when, during the forward movement of'themold blade, its forward end has become alined' with the forward end ofthe supplemental blade, and means adjustable to maintain thesupplemental blade locked in closed position. v

10. A mold for overhang type comprising blocks forming walls of the moldcavity, one of said blocks having a reduced portion adjacent the moldcavity whereby a mold cavity shaped to produce'overhang type is formed,a mold blade slidable between two of said blocks, the end wall of saidblade forming a wall of the mold cavity, a supplemental mold bladeslidable against the side of the said mold blade near the top thereofand also upon the reduced portion of said block, a lug on one of theblades for operatively connecting the two blades to cause thesupplemental blade to move to closed position in unison with the moldblade, yieldable means tending to maintain said supplemental blade inopen position and movable means to maintain said supplemental bladelocked in closed position.

11. A mold for overhang type comprising blocks forming. walls of themold cavity, one of said blocks having a reduced portion adjaoent themold cavity whereby a mold cavity shaped to produce overhang type isformed, a mold blade slidable between two of said blocks, the end wallof said blade forming a wall of the mold cavity, a supplemental moldblade slidable against the side of the said mold blade near the topthereof and also upon the reduced portion of said block, a lug on one ofthe blades for operatively connecting the two blades to cause thesupplemental blade to move to closed position in unison with the bladeand a member slidably adjustable in a direction at substantially rightangles to said blades, said member including a lever and spring foryieldably tending to maintain said supplemental blade in open positionand a locking projection extending beyond said lever whereby, accordingto the adjustment, the supplemental blade is yieldably forced to openposition by the lever or maintained locked in closed position by thelocking projection. c

12., A mold for overhang type comprising blocks forming walls of themold cavity, one of said blocks having a reduced portion adj acent themold cavity whereby a mold cavity shaped to produce overhang type isformed, a mold blade slidable between two of said blocks, the end wallof said blade forming a wall of the mold cavity, a sup plemental moldblade slidable against the side of the said mold blade near the topthereof and also upon the reduced portion of said block, a lug on one ofthe blades for operatively connecting the two blades to cause thesupplementalcblade to move to closed, position in unison with the moldblade, a member slidably adjustable in a direction at substantiallyright angles to said blades, said member including a lever. and springfor yieldably tending to maintain said supplemental blade inopenposition and a locking projection extending beyond said leverwhereby, according to the adjustment, the supplemental blade isyieldably forced to open position by the lever or maintained locked inclosed position by the locking projection, and a spring detent forholding said slidable member in adjusted posi tion. j a

, 13. A type mold embodying the following instrumentalities,.towit:blocks forming walls of the mold cavity, a main mold'blade and aplurality ofsupplemental blades arranged side by side, and adjustablemeans: for effecting the movement of desired supplemental blades in.unison with the saidmain, blade, said adjustable means being providedwith an extension for locking the other supplemental blades in closed,inoperative position. i

14. a A type mold embodying the following instrumentalities,to-wit:blocks forming walls of the mold cavity, a plurality of moldblades movable to dimension said cavity, yieldable means tending tomaintain certain.

, of. said blades in open position and means capable of being adjustedto lock certain meats-e of said blades in closed, inoperative position.

, 15. A type mold embodying the following instrumentalities,to-wit-blocks walls of the mold cavity, a main mold blade and arelatively movable supplemental mold blade arranged at one side of saidmold blade, and a lost motion connection between said main mold bladeand said supplemental blade to cause them to move forward in unisonwhen, during the forward movement of the mold blade, its forward end hasbecome alined with the forward end of the supplemental blade.

16. A type mold embodying the following instrumentalities, to-wit:-typeshoulder high side blocks, one of which is provided with a reducedportion adjacent the mold cavity whereby a mold cavity shaped toproduceoverhang type is formed and areciprocating dimensioning and typeejecting mechanism comprising a vertical portion slidable between theside blocks, the forward end of said portion forming a wall to dimensionand to exert ejecting action against the body of the type produced, anda horizontal portion slidable upon the reduced portion of said typeblock, the forward end of said horizontal portion forming a wall todimension and to exert ejectmg action against the overhang portion ofthe type produced. 7

17. A mold for overhang type comprising blocks forming walls of the moldcavity, one of said blocks having a reduced portion adjacentv the moldcavity, whereby a mold cavity shaped tov produce overhang type isformed, a mold-blade slidablebetween two of said blocks, the end .wallof said blade forming a wall of the :mold cavity, and a series ofsupplemental bladesarranged laterally of the mold blade and slidableupon the reduced portion oftheblock, a lost moforming tion-connectionbetween said mold blade and the first of the series of said supplementalblades to cause them to. move. forward in unison when, during theforward movement of the mold blade, its forward end has become alinedwith the forward end of said supplemental blade, and a lost motionconnection between each o fthe supplemental blades and the next in theseries. to causeeachto be moved forward in unison vwith the immediatelypreceding supplemental blade in the series. when the forward end of eachsupplemental blade has become alined with the forward end oftheimmediately preceding, supplemental blade.

18. A mold for overhang typefcomprising J blocks forming walls of themold cavity, one of said blocks having a reduced portion adjacent themold cavity whereby a mold cavity shaped to produce. overhang type 1sformed, a mold blade slidable between two of said blocks, the end wallof said blade forming a wall of the mold cavity and a series ofsupplemental blades arranged laterally of the main blade and slidableupon the reduced portion of the block, a lug upon said main blade foroperatively connecting it with the first of the series of supplementalblades when, during the forward movement of the main blade, its forwardend has become alined with the forward end of said supplemental blade,and a lug on each of the supplemental blades to cause each to beoperatively connected with the immediately preceding supplemental bladein the series when the forward end of each supplemental blade has becomealined with the forward end of the immediately preceding supplementalblade.

19. A mold for overhang type comprising blocks forming walls of the moldcavity, one of said blocks having a reduced portion adjacent the moldcavity whereby a mold cavity shaped to produce overhang type is formed,a mold blade slidable between two of said blocks, the end wall of saidblade forming a wall of the mold cavity, a series of supplemental bladesarranged laterally of the mold blade and slidable upon the reducedportion of the block, a lost motion connection between said mold bladeand the first of the series of said supplemental blades to cause them tomove forward in unison when, during the forward movement of the moldblade, its forward end has become alined with the forward end of saidsupplemental blade, and a lost motion connection between each of thesupplemental blades and the next in the series to cause each to be movedforward in unison with the immediately preceding sup lemental blade inthe series when the orward end of each supplemental blade has becomealined with the forward end of the immediately preceding supplementalblade, yielding means tending to maintain certain of said supplementalblades in open position and means capable of being adjusted to maintainthe remaining supplemental blades locked in closed position.

JOHN SELLERS BANCROF T. AMOS L. KNIGHT.

